Update legacy version to ruby 1.9.3
Update legacy version to ruby 1.9.3

Signed-off-by: Sai To Yeung <34863b63a003198e4cfe9dcefb53bc5c32a392d6@gmail.com>

fcruxen/ruby-buildpack,cloudfoundry/ruby-buildpack,iamjarvo/ruby-buildpack,jumptvs/BP_Ruby,fcruxen/ruby-buildpack,Jonty/ruby-buildpack,Altoros/ruby-buildpack,sky-uk/ruby-buildpack,Jonty/ruby-buildpack,fcruxen/ruby-buildpack,sky-uk/ruby-buildpack,cloudfoundry/ruby-buildpack,bskyb-commerce/ruby-buildpack,ekaranto/rails4-bluemix-buildpack,jumptvs/BP_Ruby,Jonty/ruby-buildpack,bskyb-commerce/ruby-buildpack,hpcloud/ruby-buildpack,ekaranto/rails4-bluemix-buildpack,hpcloud/ruby-buildpack,ekaranto/rails4-bluemix-buildpack,hpcloud/ruby-buildpack,iamjarvo/ruby-buildpack,cloudfoundry/ruby-buildpack,Altoros/ruby-buildpack,iamjarvo/ruby-buildpack,jumptvs/BP_Ruby,hpcloud/ruby-buildpack,ekaranto/rails4-bluemix-buildpack,Altoros/ruby-buildpack,iamjarvo/ruby-buildpack,sky-uk/ruby-buildpack,sky-uk/ruby-buildpack,bskyb-commerce/ruby-buildpack,bskyb-commerce/ruby-buildpack,Jonty/ruby-buildpack,cloudfoundry/ruby-buildpack,cloudfoundry/ruby-buildpack,fcruxen/ruby-buildpack,jumptvs/BP_Ruby,Altoros/ruby-buildpack